GB1112018A - A process for the production of finely divided materials - Google Patents

A process for the production of finely divided materials

Info

Publication number
GB1112018A
GB1112018A GB14633/66A GB1463366A GB1112018A GB 1112018 A GB1112018 A GB 1112018A GB 14633/66 A GB14633/66 A GB 14633/66A GB 1463366 A GB1463366 A GB 1463366A GB 1112018 A GB1112018 A GB 1112018A
Authority
GB
United Kingdom
Prior art keywords
weight
parts
organo
haloorgano
silazanes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14633/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Silicones Corp
Original Assignee
Dow Corning Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Corning Corp filed Critical Dow Corning Corp
Publication of GB1112018A publication Critical patent/GB1112018A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/30—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/20—Disintegrating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/06—Selection or use of additives to aid disintegrating

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silicon Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A process for producing finely-divided materials comprises grinding in a ball-type mill a composition consisting of (a) 10 parts by weight of a particulate, non-malleable, brittle, solid material, (b) from 0.1 to 2 parts by weight of a silica powder having a surface area of at least 20 square metres per gram, the surface of which has been rendered hydrophobic by treatment with an organosilicon compound selected from organo- and haloorgano-silazanes, organo-and haloorgano-siloxanes, and hydroxyl-reactive organo- and haloorgano-silanes, and (c) from 5 to 20 parts by weight of a volatile, inert liquid that is not a solvent for (a), where the mixture of (a), (b) and (c) is a free-flowing slurry throughout the grinding process. The organosilicon compound is preferably hexamethyldisilazane. The inert liquid is preferably a mixture of saturated hydrocarbons having an average of from 5 to 6 carbon atoms per molecule. A list is given of the materials to be ground, which include NaCl and NH4Cl, and of the silazanes, siloxanes, silanes and inert liquids to be used. Specific examples are described.ALSO:A process for producing finely-divided materials comprises grinding in a ball-type mill a composition consisting of (a) 10 parts by weight of a particulate, non-malleable, brittle, solid material (b) from 0.1 to 2 parts by weight of a silica powder having a surface area of at least 20 square metres per gram, the surface of which has been rendered hydrophobic by treatment with an organosilicon compound selected from organo- and haloorgano-silazanes, organo- and haloorganosiloxanes, and hydroxyl-reactive organo- and haloorgano-silanes, and (c) from 5 to 20 parts by weight of a volatile, inert liquid that is not a solvent for (a), where the mixture of (a), (b), and (c) is a free-flowing slurry throughout the grinding process. The organosilicon compound is preferably hexamethyldisilazane. The inert liquid is preferably a mixture of saturated hydrocarbons having an average of from 5 to 6 carbon atoms per molecule. A list is given of the materials to be ground and of the silazanes, siloxanes, silanes and inert liquids to be used. Specific examples are described.
GB14633/66A 1965-04-05 1966-04-01 A process for the production of finely divided materials Expired GB1112018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US445784A US3333776A (en) 1965-04-05 1965-04-05 Hydrophobic silica as a grinding aid

Publications (1)

Publication Number Publication Date
GB1112018A true GB1112018A (en) 1968-05-01

Family

ID=23770181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14633/66A Expired GB1112018A (en) 1965-04-05 1966-04-01 A process for the production of finely divided materials

Country Status (5)

Country Link
US (1) US3333776A (en)
AT (1) AT258863B (en)
DE (1) DE1507503A1 (en)
GB (1) GB1112018A (en)
NL (1) NL6604515A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1642998B2 (en) * 1967-03-23 1973-05-17 PROCESS FOR PREVENTING AGGLOMERATION OF FINE PARTICLE, 1POWDER-FABRIC MATERIALS
US3532664A (en) * 1969-01-06 1970-10-06 Gen Electric Silanol-containing organopolysiloxane compositions
US3635743A (en) * 1969-01-06 1972-01-18 Gen Electric Reinforcing silica filler
DE2344388B2 (en) * 1973-09-03 1978-06-22 Elektroschmelzwerk Kempten Gmbh, 8000 Muenchen Process for making hydrophobic silica
NL7508056A (en) * 1975-07-07 1977-01-11 Oce Van Der Grinten Nv TONER POWDER FOR DEVELOPING ELECTROSTATIC IMAGES.
JPS606379B2 (en) * 1979-09-10 1985-02-18 信越化学工業株式会社 Surface modification method of silica powder
DE3132674C2 (en) * 1981-08-19 1983-12-08 Degussa Ag, 6000 Frankfurt Process for the production of compacts
US5066511A (en) * 1989-05-19 1991-11-19 Warner-Lambert Company Method for preparing pulverized polydextrose which is substantially free of acids and compositions containing same
US5709223A (en) * 1989-07-17 1998-01-20 Bio Magnetics Systems, Inc. Magnetically modified microbial metabolism
US6120596A (en) * 1997-01-23 2000-09-19 Marconi Data Systems Inc. Method for treating pigment particles to improve dispersibility and particle size distribution
BR9805843A (en) * 1998-12-29 2002-01-29 Dow Corning Do Brasil Ltda Slag composition, method to improve slag and cement grinding efficiency
BR9805844A (en) * 1998-12-29 2001-03-20 Dow Corning Do Brasil Ltda Clinker composition, method to improve clinker and cement grinding efficiency
DE10304849A1 (en) * 2003-02-06 2004-08-19 Institut für Neue Materialien gemeinnützige Gesellschaft mit beschränkter Haftung Chemomechanical production of functional colloids
US7758689B2 (en) * 2004-08-18 2010-07-20 Ngx, Inc. Nano-talc with hydrophobic coating
PL2200780T3 (en) * 2007-09-24 2011-11-30 Saint Gobain Abrasives Inc Abrasive products including active fillers
EP2119737B1 (en) * 2008-05-15 2011-05-04 Evonik Degussa GmbH Electronic packaging
WO2011068742A1 (en) 2009-12-03 2011-06-09 3M Innovative Properties Company Method of inhibiting water adsorption of powder by addition of hydrophobic nanoparticles
US8894466B2 (en) 2009-12-03 2014-11-25 3M Innovative Properties Company Method of electrostatic deposition of particles, abrasive grain and articles
US20150037584A1 (en) * 2012-02-03 2015-02-05 Rohm And Haas Company Grinding of an alkali or alkaline earth metal borohydride
CN115449348B (en) * 2022-10-12 2023-06-27 江西广源化工有限责任公司 Grinding aid and preparation method and application thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126293A (en) * 1964-03-24 Milling process
US2591988A (en) * 1950-09-14 1952-04-08 Du Pont Production of tio2 pigments
GB951820A (en) * 1961-08-30 1964-03-11 Ici Ltd Process for manufacture of finely divided solids

Also Published As

Publication number Publication date
US3333776A (en) 1967-08-01
DE1507503A1 (en) 1969-04-10
NL6604515A (en) 1966-10-06
AT258863B (en) 1967-12-11

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